<div style="height:calc(100vh - 70px);z-index: 100;">
  <router-outlet></router-outlet>
</div>
<ion-tabs style="pointer-events: none;">
  <ion-tab-bar style="pointer-events: all;">
    <ion-tab-button routerLink="/BigRedBook/home">
      首页
    </ion-tab-button>
    <ion-tab-button routerLink="/BigRedBook/shop">
      购物
    </ion-tab-button>

    <ion-tab-button routerLink="/BigRedBook/message">
      消息
    </ion-tab-button>
    <ion-tab-button routerLink="/BigRedBook/mine">
      我的
    </ion-tab-button>
  </ion-tab-bar>
</ion-tabs>